Beater roll construction



f sept'. 1, 1931.

A. J. ALLISON Y BEATER ROLL CONSTRUCTION Filed Dec.

` IN VENT OR ATTORNEYJ.

Patented Sept. 1, 1931 crisk stares PATENT 'orifice A ALBERT J. ADDISON, OFYDAYTON, OHIO, ASSIGNOR TO SIMONDS WORDEN THIT'EV COM- YPAN'Y, OF DAYTON, OHIO, A CORPORATION OF OHIO BEATER BOLL CONSTRUCTION Application filed ADecember 3, 1928. Serial No. 323,234.

This invention relates to the construction of rolls for beating engines used in beating paper stock, and in some particulars it is an improvement on the construction disclosed in my application Serialy N o. 248,500. Inasmuch as the present roll is of the same general type as that of said application, and as the objects, principles and operation of the type are set forth in said application, I

shall proceed to describe the present construction, referring during the description to the accompanying drawings, in which Fig. 1 is a` longitudinal section through a portion of a roll embodying my present im-' provements 5 Fig. 2 is a view'of a portion of the exterior of the roll. In this view the fact that we are looking at a cylindrical obj ect is ignored and the parts are drawn as they would appear if the outer part of the roll were flattened out;

F ig. 3 is a section of the roll taken on line Y 3 3 ofFig. 1, andy Fig. 4A is an end view of one of the channels which contain the fly bars, when the channel is but partly formed.

Referring now to F ig.l 1 the vroll coinprises two circular members 10, andan intermediate circular member 11, mounted on commonly called fheads, so I shall employ that Vterm hereinafter. Y The three heads are secured to the Vshaft `in some suitable way (not shown), so that they are in effect integral with the shaft. Each head has a series of wide recesses formed in its periphery, as is indicated at 13, Fig. 3. The walls of these recesses lean toward each other, or, as will hereinafter beA said, the Awalls converge. The Yheads are so arranged on the shaft that therecesses in theseveral heads are in alignment.v Into each row of' recesses I insert a channel 14, Thesechannels are formed with converging walls, and 4they are slidden endwise into their respective rows of recesses. In order to insure their being tight in therecesses, I make the channels slightly wider at one end than at the other. In other words, the channels taper slightly. Y The recesses in the several .a shaft 12. In the art these members areY heads by cap screws 16. These se,g ;1nents cover the ends of the channels and their purpose will be described presently.

The fly bars, 20, stand on edge in the channels 14. These bars are mere sheets of metal,

corrugated.V Between the fly'bars are spacing members 2l. The endsof the bars and of the spacing members which abut the walls ofthe 'channelsare made angular, to con! form to theangularity of the walls of the channels. By this means the fly bars andr spacingmembers are secured in the channels dove-tailfashion. In effect they are inter- Y locked with the walls of the channels. The

purposevfof the segmental plates 15 is tok press the Hy bars and the spacing members'y endwise into the channels. In order toinsure the segments bearinoV against the bars and spacers instead of against the ends of the channels, the channels are made slightly short. If desired the cap screws under-` neath the channels ymay be replaced b rodsy which passlengthwise through the rol with nuts screwed on each end in recesses provided inthe plates for the cap screw heads.'V

These rods should pass through clearance holes in the head 1l. This will be readily understood by anyA mechanic, soit is unnecessary to illustrate this modification.

The spaces between the channels are filled with wood, as is shown .in Fig. 2, where one space is entirely filled with wood. Referring to Fig. 3, the construction of this wood filling is plainly seen. It consists of a strip of wood 25 lying against each channel, with a' key strip 26 driven between the two strips 25. In order to prevent the strips25 Yfromfslipping out, each strip has aV flange .27 which extends under the channel. The angularity of the key strip 9.6 is made so small that it cannot slip with reference to the strips 25. These illers are put into the roll while the wood is dry. lVlien the roll is put in service the wood becomes thoroughly soaked with water and swells the pressure against the sides of the channels then becomes very great, so great that it tends to press the walls ot the channels, particularly 'the outer portions,

against the ily bars and spacing members in the channel and clamps the latter tightly between the walls. To facilitate this the bottoms of the channels may be slotted. This is illustrated in Figi? of thed'rawings, where it .will be seen that slots 3G extend from a point near the end of the channel 14. toa point near the middle of the channel. These slots are formed in the bottom of the channel, paralleling and close to the channel' wall, and, as will be seen in Fig. 2f, they extend at each end considerably past thc `zone which is subiectto the pressure of the wood iillers. The remaining attachments. between the walls and bottom being comparatively narrow the walls are more readily pressed against the bars and spacers inthe channel, it being understood that the bars and spacers are carefully fitted -in the channeL'so there need be but slight. movement of the. walls. It' desired additional narrow ynecks connecting the walls to the bottom of the channel may be left midway7 between the heads, in order to give the bot- .toins of the channels more support. This is suoli4 an obviousinoditication that I deem it unnecessary to illustrate it. Thus the channel walls which sustain the pressure of the wood fillers, are adapted to yield' under the pressure and` clamp the bars and spacingr members very tightly between the walls. For the purpose ot protecting the bottoms of the channels, especially in case rather hard metal is used in making the fly bars, Inlay lay in the bottom ot each channel a i thin. plate 31, composed of metal which is hij.

more durable than the metal composing thechannel itself.

Atthe ends ot the roll I prefer to have the ffly bars ext-end endwise to the outer surfaces of the segments 15.7l Ot necessity this extension is tree standing andA in order to reenforce these oyerhanging portions, I tie them together as at 32. In fact, I simply inalre two fly bars with one piece of metal, as is quite clearly illustrated in Fig. 2. i

rIhe channels maybe made et cast iron, malleable iron or cast steel. I prefer. however, toroll them, starting with a billet, in

the wayr rolled sections'are usually made,

Obviously,l a channel. with conyergingV walls` cannot be rolled in the ordinary way. To overcome this difficulty, I roll the bottom:

of, the, channel to a' curved. forni, and then by a separate operation I flatten the bottom. The form in which the channel is rolled is illustrated in Fig. el. In this figure a dotted line is drawn across the bottom of the channel a short distance from each wall. Preferably, I torni the portions of the bottoni between these dotted lines and the wall flat, and maire the wall the proper angle with reference to these flat portions of the bottom. Then the only portion oie the bottom which needs to be straightened is that lying between the two dotted lines. These channels are rolled in long lengths,r and then cut to the length required for use in the rolls. VFlalftening the bottom ot the channels is deferred until zitter the channels are cut to length. Then the lat toning can be done in various ways, all o'l which are so simple and well understood by persons skilled in the art, that I deem it unnecessary to illustrate or describe any apparatus for doing it.

VyTh-ile- I have described the preterred construction, it is not to be understood that the practice et my invention is limited to the ruction would be aight ily bars be l'ly bars, 'for my cons equally useful. should si *Y used. In the drawings l have sh .n the ily bars in successire groups leani g in opposite directions; it desired, the bars may lean` in the same direction in all groups, or as suggested in my application above met tioned, there may be more groups li-aning in one direction than in the other. lVhile I prefer securing the channels inthe recesses dove-tail fashion, some other form of interlock, tor example, that 'which I have shown in my application previously nientioned, might be substituted. Having illustrated and described my invention. I claim:

l. In a beater roll. a series oi heads scoured on.A a shaft, said heads having` broad reces-ses in their peripheries, channels connecting the heads and secured in said recesses with their flanges extending outward. ily barsstanding onredge in said channels. alternating with spacingl members. and plates secured tothe outside heads. said plates closing the ends ol' the channels and being adaptcdl to clamp the fly bars and spacingr ineinbers endwi se therein.

2. In a beater roll, a series of heads secured on a shatt,'said heads having broad recesses inr their peripheries, which recesses have converging walls, channels connecting thev heads and. lying in said recesses, which channels have converging walls, thereby curing them in the recesses dore-tail fashion, fly bars standing on edge in said channels and alternating with spacing` members, and plates secured to the outside heads, whereby the ends of the channels are closed and the fly bars `and the spacing members are clamped endwise. ,Y n

3. Ina beater roll, a series ofV heads secured on ay shaft, said heads having broad recesses in their peripheries, which recesses have converging walls, channels connecting the heads and `lying inL said recesses, which channels have converging walls, thereby securing them in the recesses dove-tail fashion, said channels being slightly tapered longitudinally and the recesses graduated in width, so the channels can be made tight in the recesses by driving theniendwise, fly bars standing on edge in' said channels and alternating withy spacing members, and

plates secured tothe outside heads, whereby ther-,nds of the channels are? closed and the lly bars and the spacing members are clamped endwise. l

In a beater roll, a series of heads secured Yto a shaft, Asaid' heads having broad recesses in their peripheries, channels connecting the heads and secured in said re- (fesses with their flanges extending outward, ily bars secured in said channels, and strips ot wood driven between the walls of adjacent channels.

5. In a beater roll, a'series of heads secured to a shaft, said heads having broad recesses in their peripheries, with converg-` ig walls,`channels connecting the heads and lying in said recesses, which channels have converging walls, thereby'securing them in the recesses dove-tail fashion, fly bars lsecured in said channels, and strips of wood driven between the walls of adjacent channels.

6. In a beater roll, a series o1 heads secured to a shaft, said heads having broad recesses in their peripheries, withcoiiverging walls, channels connecting the heads and lying in said recesses, which channels have converging walls, thereby securing them in the recesses dove-tailY fashion, fly kbars secured in said channels, and strips of wood driven between the walls of adjacent channels, the bottom of the channels having slots paralleling and close to each wall, said slots being of such extent that the union of each wall to the bottoni is reduced to a few narrow necks, thereby adapting the Ywalls to yield laterally under the pressure imparted by the wood fillers and tightly clamp the contents of the channel between the walls, there being a neck at each head.

7. In a beater roll, a series of heads secured to a shaft, said heads having broad recesses in their peripheries, with converg ing walls, channels connecting vthe heads and lying in said recesses, the channels having converging walls, thereby securing themselves in the recess dove-tail fashion,

fly bars secured in the channels, and wooden fillers closing the spaces between adjacent said lillers comprising strips which lie againstithe channel walls, each strip having a flange extending under the edgeV of the wall, and a key strip driven betweenY said strips.

8.In a beater roll a series of vheads se-4 cured on a shaft, said heads having broad recesses in their peripheries, with converging walls, channels connecting thefheads and lying in said recesses, the walls of the channels also converging, thus securing fthe channels in the recesses dove-tail fashion; fly bars in each channel, comprising plates ofy metal standing on edge and extending obliquely across the channel, spacing'menibers between said bars, the ends ofv said bars and members being angular to conform to the inclination of the channel walls, plates outside of the terminal heads, contiguous tothe ends of the channels and adaptV` ed to bear against the liy barsand spacers, and means for thereby clamping the bars and spacing niembers endwise. f

9. In a beater roll, a series of heads secured on a shaft, said heads having broad recesses in their i ing walls, channels connecting the heads and lying in said recesses, the walls of the chan'- nels also converging, thus securing the channels in the recesses dove-tail fashion; H v bars in each channel, comprising corrugated plates of metal standing on edge and extending obliquelyraeross the channel, spacing members between said bars, the ends of said bars and members being angular to conform to the inclination of the channel walls, plates secured tothe outside heads and bearing against the contiguous bars and spacing members, whereby .said bars and menibers are clampedendwise -in the channel,

cured onfa shaft, ,said heads having'broad recesses `1n their peripheries, with'convergf ing'walls, channels'connecting the heads` and lying in said recesses, the walls otlthe channels also converging, thussecuring` the "l channels rin the` recesses dove-tail fashion;

ily bars ,in each channel, comprising plates Y thereby clamping then bars and spacing members endwlse and strips of wood driven between the walls of adjacent channels..

ll. In a beater roll, a 'series 4olfheads secured on' a shaft, saidheads having broad' recesses vintheir eri Jheries with conver0- drawine` said )lates in peripheries, with converg# roc Yros

and strips of wood driven between thewall'sf yof adjacent channels.

l0; Ina-beater roll, aserles of heads se-y ric lie

ing walls, channels connecting the heads and lying in said recesses, the walls of the ehannels also converging, thus securing the channels in the recesses dovetail fashion; fly bars in each channel, comprising plates of metal standing on edge and extending obliqucly across the channel, spacing members between said bars, the ends of said bars and members being angular to conform to the inclination of the channel walls, plates outside of the terminal heads, contiguous to the ends of the channels and adapted to bear against the ily bars and Spacers, means for drawing said plates in, thereby clamping the bars and spacing members endwise and strips of wood driven between the walls of adjacent channels, the bottoms of the channels having slots paralleling and near each wall, extending from head to head, whereby the channel walls are adapted to yield under the pressure of said wood filling when it gets wet, there y clamping the fly bars and spacing members tightly between the channel walls.

12. In a beater roll, a series of heads mounted on a shaft, said heads having broad recesses in their peripheries, channels lying in said recesses with their walls eX- tending outward, and bridging the spaces between the heads, means for holding the channels in the recesses in opposition to centrifugal or other forces tending to disn lodge them, ily bars standing on edge Vin cach channel, alternating with spacing members, means for holding said bars and spacing members in the channels in opposition to centrifugal or other forces tending to dislodge them, plates at each end of the channel, and means for drawing said plates toward each other tov clamp the bars and spacing members endwise.

13. In a beater roll, a series of heads mounted on a shaft, said heads having broad recesses in their peripheries, channels lying in said recesses with their walls extending outward, and bridging the spaces between the heads, means for holding the channels in the recesses in opposition te centrifugal or other forces tending to dislodge them, fly

t bars standing on edge in each channel, al-

ternating with spacing members, means for holding said bars and spacing membersin the channels in opposition to centrifugal or other forces tending to dislodge them, plates at each end of the channels, means for draw* ing said plates toward each other to clamp the bars and spacers endwise, and wood fillers driven between the channels.

14. `A beater rollv comprising beater bars arranged in groups, each group being secured `in a container having a bottom and sides, a super-bottom in said container comprising a relatively thin plate composed of Si; metal having durability superior to the material composing said container, on which plate the beater bars rest.

15. In a beater roll, a series of heads mounted on a shaft, said heads having re cesses in their peripheries, channels lying in said recesses with their walls extending outward, and interlocked with the'heads to prevent radial displacement, fly bars in said channels, woodV fillers driven between the walls of adjacent channels, the bottoms of the channels having slots paralleling and close to each wall, said slots extending beyond the ends of said wood fillers, whereby the walls of the channels are adapted to yield under the pressure of the wood and be pressed against the fly bars to hold them immovable in the channels.

16. In a beater roll, a channel for holding the fly bars, the bottom of said channel having slots close to and paralleling the sides ofthe channel, said slots being of such extent that the union of each wall to the bottom is reduced to a few narrow necks.

17. In a beater roll, a forged channel for holding ily bars, the walls of said channel forming an acute angle with the bottom, the bottom having slots close to and paralleling the sides, said slots being of such extent that the union of each wall to the bottom is rcduced to a few narrow necks.

18. In a beater roll, a removable forged channel for holding the fly bars, the walls thereof forming acute angles with the bottom, thus causing the walls to converge.

ALBERT J. ALLISON. 

